B. Energy can change from one form to another
Answer:
Charge, 
Explanation:
It is given that,
The number of electron in a RBCs, 
We need to find the total charge of these electrons in the red blood cell. Let it is q. Using the quantization of charge as follows :
q = ne
e is the change on electron

So, the net charge is
.
Answer:
Explanation:
It is everywhere and essential for all life on earth.
-- Your foot hits the street.
-- Your foot exerts a force down onto e pavement.
-- The pavement exerts an equal force up against your foot. This is the force that stops you from going any farther down.